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-   -   Trifecta's (http://forums.ozmium.com.au/showthread.php?t=25284)

Benny 14th October 2012 05:05 AM

Trifecta's
 
How do I calculate the prob of multiple trifecta's Using the Don Scott methord

Try Try Again 14th October 2012 08:48 AM

Hi Benny,

Not sure what you are actually asking for but if you are looking for a formula to calculate theoretical trifecta dividends then Dr Roger Dedman in his book Commonsense Punting gave us the following formula

{x * [(x*y-1)] *[z+1]/[x+1] -1

where x is odds of winner, y is odds of 2nd placegetter and z is odds of 3rd placegetter.

e.g. if x = $3.00 (2/1), y = $4.00 (3/1), z = $5.00 (4/1)

2*[(2*3-1)]*[4+1]/[2+1] -1

= [2*5*5/3]-1

= 50/3 -1

= 16.67 - 1

= 15.67 to 1

= $16.67

If this is not what you're after then I'm sorry to have wasted your time.

Benny 14th October 2012 11:21 AM

Quote:
Originally Posted by Try Try Again
Hi Benny,

Not sure what you are actually asking for but if you are looking for a formula to calculate theoretical trifecta dividends then Dr Roger Dedman in his book Commonsense Punting gave us the following formula

{x * [(x*y-1)] *[z+1]/[x+1] -1

where x is odds of winner, y is odds of 2nd placegetter and z is odds of 3rd placegetter.

e.g. if x = $3.00 (2/1), y = $4.00 (3/1), z = $5.00 (4/1)

2*[(2*3-1)]*[4+1]/[2+1] -1

= [2*5*5/3]-1

= 50/3 -1

= 16.67 - 1

= 15.67 to 1

= $16.67

If this is not what you're after then I'm sorry to have wasted your time.


It's just what I need. Thanks

Benny 14th October 2012 03:02 PM

Is there any way that I can use a speadsheet to do the calulations. I take no more than 5 horses which is 60 tickets.

Try Try Again 14th October 2012 08:05 PM

Hi Benny,

If you can list your email address I have put together a spreadsheet you can use for up to 5 horses.

Benny 15th October 2012 10:55 AM

Quote:
Originally Posted by Try Try Again
Hi Benny,

If you can list your email address I have put together a spreadsheet you can use for up to 5 horses.


This is my backup email

rhea5355@hotmail.com

Try Try Again 15th October 2012 11:13 AM

Hi Benny,

I'll send the excel file later this afternoon.

Regards

TTA

Try Try Again 15th October 2012 03:03 PM

Hi Benny,

I have sent you the spreadsheet. Let me know that you receive it.

Regards

TTA


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